Transmitting-Collision Tradeoff in Cognitive Radio Networks: A Flexible Transmitting Approach
Hong Du, Zaixue Wei, Lu Ye, Yu Wang, Dacheng Yang · 2011
In cognitive radio networks, in order to avoid collision to primary user (PU), cognitive radio (CR) user ought to sense the spectrum periodically to certify that PU is absent. However, the collision to PU also occurs due to imperfect sensing or PU’s returning when CR user is transmitting. In this pa